8°Quais das equaçoes a seguir NÃO possuem raízes reais? a)-x²-5=0
b)x²+13=0
c)x²/5 × ½=0
d)-x²+2=0
e)x²+7=4
f)x²/3 × 1=1
b)x²+13=0
c)x²/5 × ½=0
d)-x²+2=0
e)x²+7=4
f)x²/3 × 1=1
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